Half his eight to o



J. H0 RSLEY.

Pumps.

c N ITED STATES PATENT Charrono JAMES HORSLEY, OF TITUSVILLE,PENNSYLVANIA, ASSIGNOR OF ONE- HALF HIS RIGHT TO O. B. WIOKHAM, OF SAMEPLACE.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 150,160, dated April28, 1874; application tiled October 18, 1873.

To all whom it may concern:

Be it known that I, J AMES HORSLEY, of Titusville, in the county ofCrawford and State of Pennsylvania, have invented certain Improvementsin Pumps, of which the following is a specification:

My invention rela-tes to the class of pumps known as lift and forcepumps, and is so arranged that the inner surface of the pumpbarrel, andthat portion of the piston carrying the upper valve, sustain no frictionnor wear, and require no nished surfaces, the entire friction and wearbeing upon a hollow piston, through which the uid passes. This isaccomplished by means of a peculiar arrangement of packing seated withinthe pump-barrel, and the lat-ter may be made of any ordinary piece ofpipe requiring no turning or litt-ing. I also so arrange that the pistonmay be lowered and attached to the foot-valve, and the whole drawn outtogether.

Figure l is a vertical section, and Fig. 2 is a transverse section online x a'.

a is the pump-barrel, formed of two pieces of ordinary pipe, betweenwhich is placed a collar, b, having a tapering ground-seat for holdingthe packing-cylinder in position, as hereinafter described. c is afoot-valve seated within the pump-barrel in the usual way. Z is thepump-piston rod. c is a hollow tube forming the piston. The fittingconnecting the rod and piston has side openings for the upward passageof the fluid, as shown at f. A valve, g, is secured to the lower end ofthe piston, and the latter is enlarged at this point to increase thesuction on the upward stroke. h is a packing-cylinder surrounding thepiston and seated within the collar b by a tapering ground-seat, asshown. lVithin this cylinder are metal packingrings embracing the pistonclosely. The lower ring, t, is fixed within the cylinder. The remainingrings k k lit closely, but are not xed. Of the annular spaces betweensaid rings, the upper and lower spaces are closely packed with hardsponge; the others are lled with fine shot. The rings k k and the spongeand shot packing are at all times held down closely upon the lower ring,c', and the packing is pressed tightly against the piston by the weightor pressure of lluid upon the upper ring, and the cylinder 7L is held inplace in its seat bythe same pressure, the piston working through it.The cylinder may be lifted from its seat at any time by a slight upwardjar of the piston, and the whole may be drawn out. The upper end of thefoot-valve. c is provided with a notched head, and the lower end of theworking valve g has a grooved slot, as shown, each so arranged that onlowering the piston upon the head of the valve c, and turning itpart-way round, the parts interlock, and the two valves, together withthe piston and packingcylinder, may be drawn entirely out of the pump.

On the upward stroke of the piston the fluid fills the space between itand the foot-valve, as in ordinary suction-lmmps, and on the downwardstrokea portion of the fluid is displaced, and forced upward through thehollow piston d into the pump-tube, to be lifted out on the upwardstroke.

It will be seen that there is no friction or wear upon any part ofthepump except upon the hollow rod d, which is amply packed and protectedby the. shot and sponge packing, and the latter will prevent theentrance or liassage of any grit or sediment. It is kept tight at alltimes by the fluid-pressure from above acting upon the upper ring.

I claim as my invention- The packingcylinder l1, with its packingringst" 7c L, and its described packing, held in place by the fluid-pressurefrom above, the whole arranged upon the piston, and seated within thepump-barrel, and operating substantially as set forth.

JAMES HORSLEY. Witnesses: t

E. B. FREW, ANDREW B. HowLAND.

